C# UDP Server/Client 예제

//Server

System.Net.Sockets.UdpClient udpClient = new System.Net.Sockets.UdpClient("127.0.0.1", 5555);

String cmd = "dump";

System.Text.ASCIIEncoding encoding = new System.Text.ASCIIEncoding();

byte[] dgrams = encoding.GetBytes(cmd);

udpClient.Send(dgrams, dgrams.Length);

udpClient.Close();

//Client

static private UdpClient udpServer;

static private byte[] data;

static private IPEndPoint ipep = new IPEndPoint(IPAddress.Any, 5555);

static private IPEndPoint server = new IPEndPoint(IPAddress.Any, 0);

static private void ThreadProc()

{

    while (true)

    {

        data = udpServer.Receive(ref server);

        string s = Encoding.Default.GetString(data);

        Console.WriteLine(s);

    }

}

private void Form1_Load(object sender, EventArgs e)

{

    ipep = new IPEndPoint(IPAddress.Any, 5555);

    server = new IPEndPoint(IPAddress.Any, 0);

    udpServer = new UdpClient(ipep);

    data = new byte[1024];

    Thread thread = new Thread(new ThreadStart(ThreadProc));

    thread.Start();

    Console.WriteLine("Thread started");

}